Nau Compleat Dress95% Micromodal (derived from European beechwood), 5% Spandex. Washing Instructions: Machine wash cold (up to 86 degrees Fahrenheit), tumble dry low. Women's nau Clothing Size Chart XXS XS S M L XL CHEST (IN) 31 32 33 34 35 36 37 38. 5 40 41 43 TRUE WAIST (IN) 23. 5 24. 5 25. 5 26. 5 27. 5 28. 5 29. 5 31 32. 5 33. 5 35. 5 HIP (IN) 33. 5 34. 5 35. 5 36. 5 37. 5 38. 5 39. 5 41 42. 5 43. 5 45. 5 ARM LENGTH (IN) 29 29. 75 30. 5 31. 25 32 32. 75 NUMERIC